Storage control method, program and apparatus for accessing disk array
US7502905B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2005 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | May 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3476
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Based on an input/output request from a server, a volume formed of a plurality of disk apparatuses having a RAID (Redundant Arrays of Inexpensive Disks) configuration is accessed. A performance measuring unit periodically measures the performance of the plurality of disk apparatuses during apparatus operation, and a performance-measurement-value storage unit stores a performance measurement value obtained through measurement. When the performance is determined from the performance measurement value as having been deteriorated, a performance improving unit adds a disk apparatus to increase the size of the volume. Also, the performance improving unit sets a performance threshold for each of performance measurement values of a plurality of types and, when at least any one of the performance measurement values falls below a corresponding performance threshold, adds a disk apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.